Objective: To investigate the molecular mechanism of sex reversal in a 46,XY female patient.
Methods: Clinical data was collected. Peripheral blood lymphocytes were cultured for G-banding chromosomal analysis and DNA extraction. Sex-determining region of Y-chromosome (SRY) gene was analyzed with polymerase chain reaction (PCR) and DNA sequencing .
Results: Although the patient has a female appearance, he has a karyotype of 46,XY. The SRY gene can be detected in all samples. The 6th base of SRY gene coding region was deleted, resulting in a frameshifting mutation and premature termination of protein translation.
Conclusion: The sex reversal of the patient is probably due to abnormal embryonic development caused by the SRY gene mutation.
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http://dx.doi.org/10.3760/cma.j.issn.1003-9406.2012.05.016 | DOI Listing |
Differences/disorders of sex development (DSDs) are a diverse group of congenital conditions that result in disagreement between an individual's sex chromosomes, gonads, and/or anatomical sex. The 46, XY DSD group is vast and includes various conditions caused by genetic variants, hormonal imbalances, or abnormal sensitivity to testicular hormones, leading to varying degrees of under-virilization. A 19-year-old phenotypically normal female from Kakamega, Kenya, presented with primary amenorrhea.
View Article and Find Full Text PDFJ Pediatr Endocrinol Metab
January 2025
Department of Genetics, Reproductive Biomedicine Research Center, 48499 Royan Institute for Reproductive Biomedicine, ACECR , Tehran, Iran.
Differences of sex development (DSD) refer to various congenital conditions affecting the urogenital and hormonal systems. Accurate diagnosis and personalized management are crucial for supporting patients through complex decisions, such as those related to gender identity. This study represents the first comprehensive investigation into DSD in Iran, analyzing patient's clinical and genetic data between 1991 and 2020.
View Article and Find Full Text PDFCommun Biol
January 2025
Department of Systems BioMedicine, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo, Japan.
In mammals, SOX9/Sox9 expression in embryonic gonads is essential for male gonadal sex determination. Multiple enhancers of Sox9 have been identified, of which the mXYSRa/Enh13 enhancer plays a crucial role in mice. SOX9 and SRY binding sites within the enhancer have been identified as functional.
View Article and Find Full Text PDFArch Med Res
January 2025
Programa de Investigación de Cancer de Mama, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico; Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico. Electronic address:
Na⁺/H⁺ exchanger regulatory factor 2 (NHERF2) is a nucleocytoplasmic protein initially identified as a regulator of membrane-bound sodium-hydrogen exchanger 3 (NHE3). In the cytoplasm, NHERF2 regulates the activity of G protein-coupled receptors (GPCRs), including beta-2 adrenergic receptor (2β-AR), lysophosphatidic acid receptor 2, and parathyroid hormone type 1 receptor. In the nucleus, NHERF2 acts as a coregulator of transcription factors such as sex-determining region Y protein (SRY), involved in male sex determination, and estrogen receptor alpha (ERα).
View Article and Find Full Text PDFJ Clin Endocrinol Metab
January 2025
Marmara University School of Medicine, Department of Pediatric Endocrinology, 34854, Istanbul, Turkey.
Context: Duplications occurring upstream of the SOX9 gene have been identified in a limited subset of patients with 46,XX testicular/ovotesticular differences/disorders of sex development (DSD). However, comprehensive understanding regarding their clinical presentation and diagnosis is limited.
Objective: To gain further insight into the diagnosis of a large cohort of 46,XX individuals with duplications upstream of SOX9.
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